SpringBoot-启动报错（Error starting ApplicationContext）

小鱼儿 2023-06-26 05:37 0阅读 0赞

搭建SpringBoot+mybatis+maven集成项目，在运行启动类main函数的时候控制台报出如下错误，启动失败：

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 
       2018- 07- 18 16: 57: 29.514 ERROR 17300 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter : 
       
       *************************** 
       APPLICATION FAILED TO START 
       *************************** 
       
       Description: 
       
       Cannot determine embedded database driver class for database type NONE 
       
       Action: 
       
       If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it ( no profiles are currently active).

报错的原因很明显，是我的项目有需要操作数据库的业务，但是数据库配置文件找不到导致数据类型报NONE值。

我的pom.xml配置：

<?xml version= "1.0" encoding= "UTF-8"?> 
       
       <project xmlns= "http://maven.apache.org/POM/4.0.0" xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" 
       xsi:schemaLocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
       <modelVersion> 4.0.0</modelVersion> 
       
       <groupId>SpringBoot</groupId> 
       <artifactId>SpringBoot</artifactId> 
       <version> 0.0.1-SNAPSHOT</version> 
       <packaging>war</packaging> 
       <name>SpringBoot Maven Webapp</name> 
       <url>http: //maven.apache.org</url> 
       
       <properties> 
       <project.build.sourceEncoding>UTF- 8</project.build.sourceEncoding> 
       <maven.compiler.source> 1.7</maven.compiler.source> 
       <maven.compiler.target> 1.7</maven.compiler.target> 
       </properties> 
       
       <parent> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-parent</artifactId> 
       <version> 1.5.8.RELEASE</version> 
       <relativePath></relativePath> 
       </parent> 
       
       <resources> 
       <resource> 
       <directory>src/main/java</directory> 
       <includes> 
       <include>** /*.properties</include> 
       <include>**/*.xml</include> 
       </includes> 
       <filtering> false</filtering> 
       </resource> 
       <resource> 
       <directory>src/main/resources</directory> 
       <includes> 
       <include>** /*.properties</include> 
       <include>**/*.xml</include> 
       </includes> 
       <filtering> false</filtering> 
       </resource> 
       </resources> 
       
       
       
       <dependencies> 
       
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter</artifactId> 
       </dependency> 
       <dependency> 
       <groupId>org.mybatis.spring.boot</groupId> 
       <artifactId>mybatis-spring-boot-starter</artifactId> 
       <version> 1.3.1</version> 
       </dependency> 
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-devtools</artifactId> 
       <optional> true</optional> 
       </dependency> 
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-web</artifactId> 
       </dependency> 
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-test</artifactId> 
       <scope>test</scope> 
       </dependency> 
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-jdbc</artifactId> 
       </dependency> 
       <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-tomcat</artifactId> 
       <scope>provided</scope> 
       </dependency> 
       <exclusions> 
       <exclusion> 
       <artifactId>log4j-over-slf4j</artifactId> 
       <groupId>org.slf4j</groupId> 
       </exclusion> 
       <exclusion> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter-tomcat</artifactId> 
       </exclusion> 
       </exclusions> 
        
       <dependency> 
       <groupId>mysql</groupId> 
       <artifactId>mysql-connector-java</artifactId> 
       <version> 5.1.42</version> 
       </dependency> 
        
       </dependencies> 
       
       <build> 
       <finalName>SpringBoot</finalName> 
       <pluginManagement> 
       <plugins> 
       <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
       <configuration> 
       <fork>true</fork> 
       </configuration> 
       </plugin> 
       <plugin> 
       <artifactId>maven-clean-plugin</artifactId> 
       <version>3.0.0</version> 
       </plugin> 
        
       <plugin> 
       <artifactId>maven-resources-plugin</artifactId> 
       <version>3.0.2</version> 
       </plugin> 
       <plugin> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>3.7.0</version> 
       </plugin> 
       <plugin> 
       <artifactId>maven-surefire-plugin</artifactId> 
       <version>2.20.1</version> 
       </plugin> 
       <plugin> 
       <artifactId>maven-war-plugin</artifactId> 
       <version>3.2.0</version> 
       </plugin> 
       <plugin> 
       <artifactId>maven-install-plugin</artifactId> 
       <version>2.5.2</version> 
       </plugin> 
       <plugin> 
       <artifactId>maven-deploy-plugin</artifactId> 
       <version>2.8.2</version> 
       </plugin> 
        
       <plugin> 
       <groupId>org.eclipse.m2e</groupId> 
       <artifactId>lifecycle-mapping</artifactId> 
       <version>1.0.0</version> 
       <configuration> 
       <lifecycleMappingMetadata> 
       <pluginExecutions> 
       <pluginExecution> 
       <pluginExecutionFilter> 
       <groupId> 
       org.apache.maven.plugins 
       </groupId> 
       <artifactId> 
       maven-resources-plugin 
       </artifactId> 
       <versionRange>[3.0.2,)</versionRange> 
       <goals> 
       <goal>resources</goal> 
       </goals> 
       </pluginExecutionFilter> 
       <action> 
       <ignore></ignore> 
       </action> 
       </pluginExecution> 
       </pluginExecutions> 
       </lifecycleMappingMetadata> 
       </configuration> 
       </plugin> 
       </plugins> 
       </pluginManagement> 
       </build> 
       </project>

项目完整路径：

![70][]

很奇怪，我将配置文件全部放在resources文件夹下，官方文档也建议将配置文件放在此文件夹下，但是就是找不到我的数据库配置文件，具体原因暂时还不明白。

解决方法：将数据库配置文件（我的是上图resources文件夹下的application.properties）复制到src/java/main目录下，复制后路径如下图所示：

![70 1][]

其中resources目录下的application.properties文件可以删除了。

上述操作后成功启动项目，问题解决。

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